I hear ya bro. I dumped my XX brakes in favor of Magura MT-8's and I'm not looking back. No more turkey gobble, rubbing brake pads, constant bleeding. What kills me is that every time my LBS called SRAM about turkey gobble (on multiple SRAM models on multiple bikes), they always acted like they had never heard the phrase turkey gobble before. Granted, they would always be happy to send another set of pads or rotors, but they were playing dumb to the whole problem.

My problem with SRAM is that I love their products, its their corporate decisions that suck.

Disregard. I thought you were talking about the wear on the aluminum cog. Just noticed the the missing part of the other cog. Rock or something caught in there, or it was just a defective cog. Time for a titanium XTR cassette.

Oops! Sorry guys I just realized that they only offer individual cogs up to a nine speed cassette. But they do offer a 39 tooth titanium! Pretty cool... With that in mind I'm gonna leave my previous post up.

test

Actiontec now has a 36t option under "Single Titanium Cogs"... has anyone tried it?

I'm pretty F'ing disappointed with SRAM... I've been wrenching on bikes for 20+ years now and they tell me that they won't sell me a common replacement part to fix something that doesn't work because they are afraid that I "might" do it wrong?

I just pulled my cassette, carefully removed the 36T cog with a taped flatblade screwdriver, a little bit at a time while rotating around the perimeter, cleaned everything up very nicely with the inside of the cassette wide open, replaced the cog, carefully pressing it back on with my thumb at each pin point, and then seating it with small channel locks with taped jaws, again a little bit at a time while rotating. Alignment is easy, as the one flat/short pin on the main body lines up with the single blind hole on the 36T cog. Piece of cake. My only concern would be that it loosens up if you do it to the same cog often , i.e. to clean the inside of the cassette. There are many normal maintenance tasks that are more difficult than this.

XX Cassette...36t Ring

Posted in the wrong thread: here it goes again.

Got my XX 36t titanium replacement cog from hellore.se this week. The XX cassette retails for an unbelievable USD670 over here, so the USD130 paid incl shipping was ok to save a half season use cassette from being disposable.

The cog has an aluminium spider for more contact area against the boss. The cog weighs 87g, 31g more than the original alu cog 56g. Not bad. The finish is good.

Just put a 3rd new chain on my 15 month old XX drivetrain and now my chain always skips on the 36tooth cog. Was thinking the derailer might be the cause since it was not as strong anymore and the small philips screw that holds the cage post has developed a half moon flat spot. Now after reading here it makes more sense that Ive just worn the 36t cog(should have replaced chain sooner).

Even though to my eye it seems not that bad , is it most likely to cause chain skipping under power?

Every other cog works fine it seems stupid to give sram another $400 for one cog. Can a new cog really be put on without special tools?

I just had to replace my XX cog stack due to worn chain too. These thinner 10 speed chains don't last like they used to folks. My lbs has been watching this issue over the past two years and has figured out that if you ride alot you need to replace your 10 speed chain AT LEAST twice per season to get maximum cog stack longevity. XX stack = way cool, light, RACING equipment. Not built for the long haul IMHO. Factory racers get this stuff for free and replaced often. I am now riding an XT stack and bought a dropper post with the savings... If we could just replace the individual cogs on the XX stack...

You are right, it looks like two years is all any of the hard working XX stuff will last. Turns out my rear derailer cage post was worn out along with the pin that holds it and a replacement cage was $190 which means you may as well look for a new derailer.

X0 is cheaper but I wonder if it has more legs. I bought the new X0 cassette which was only $250 but since the material is the same....